Re: [yocto] [OE-core] [Openembedded-architecture] Y2038 proposal

[Ola x Nilsson <ola.x.nilsson@axis.com>]

On Mon, Dec 05 2022, Richard Purdie wrote:

> On Mon, 2022-12-05 at 11:00 +0100, Ola x Nilsson wrote:
>> On Wed, Nov 30 2022, Richard Purdie wrote:
>> 
>> > On Wed, 2022-11-30 at 17:56 +0100, Alexandre Belloni wrote:
>> > > On 30/11/2022 16:46:17+0000, Ross Burton wrote:
>> > > > On 30 Nov 2022, at 14:20, Richard Purdie via
>> > > > lists.yoctoproject.org
>> > > > <richard.purdie=linuxfoundation.org@lists.yoctoproject.org> wrote:
>> > > > > > > * Could we optionally disable some of the glibc 32 bit function calls
>> > > > > > > to ensure they're not being used? 
>> > > > > > 
>> > > > > > Could you be more specific here? Would you like to disable some
>> > > > > > syscalls?
>> > > > > 
>> > > > > I'm meaning disabling the 32 bit glibc time functions.
>> > > > 
>> > > > Some time ago I filed
>> > > > https://bugzilla.yoctoproject.org/show_bug.cgi?id=6803 as Debian
>> > > > has a nice sanity check where it warns if non-LFS glibc functions
>> > > > are used.  I imagine the same logic could be used to check for 32-
>> > > > bit time_t use.
>> > 
>> > That sounds interesting and something we should probably look into for
>> > both issues...
>> 
>> I have a working sanity checker that checks for any glibc functions
>> affected by -D_FILE_OFFSET_BITS=64 or -D_TIME_BITS=64.
>> The INSANE_SKIP functionality needs some more polish but I'd be happy to
>> contribute it.
>> 
>> Some libraries use both 32 and 64 bit APIs to glibc and needs exceptions
>> in the checker.
>> 
>> I have not run any world builds with this checker, I've focused on the
>> recipes we actually use so far so we could get to a testable system.  My
>> biggest worry at the moment is rust, I know to little to know if it is
>> an actual problem and how to fix it.
>> 
>> I would like to be part of any "y2038 team" for Yocto.
>
> That does sound useful, perhaps sharing it as an RFC patch might be a
> good place to start? We might be able to run one of the autobuilder
> world targets against it, see how it looks for our core recipes?

That works for me.  I've started preparing a patch for oe-core.

-- 
Ola x Nilsson